# Interactive tests using `expect`
#
# There is no shebang line because you shouldn't be running this by hand. You
# should be running it via `make test` to ensure the environment is properly
# setup.

if test "$TRAVIS_OS_NAME" = osx
    echo "Skipping interactive tests on macOS on Travis"
    exit 0
end

# This is a list of flakey tests that often succeed when rerun.
set TESTS_TO_RETRY bind.expect

# Set this var to modify behavior of the code being tests. Such as avoiding running
# `fish_update_completions` when running tests.
set -x FISH_UNIT_TESTS_RUNNING 1

# Change to directory containing this script
cd (dirname (status -f))

# These env vars should not be inherited from the user environment because they can affect the
# behavior of the tests. So either remove them or set them to a known value.
# See also tests/test.fish.
set TERM xterm
set -e ITERM_PROFILE

# Test files specified on commandline, or all *.expect files
if set -q argv[1]
    set files_to_test $argv.expect
else
    set files_to_test *.expect
end

source test_util.fish (status -f) $argv
or exit
cat interactive.config >>$XDG_CONFIG_HOME/fish/config.fish

say -o cyan "Testing interactive functionality"
if not type -q expect
    say red "Tests disabled: `expect` not found"
    exit 1
end

function test_file
    set -l file $argv[1]
    echo -n "Testing file $file ... "
    set starttime (date +%s)
    begin
        set -lx TERM dumb
        expect -n -c 'source interactive.expect.rc' -f $file >$file.tmp.out 2>$file.tmp.err
    end
    set -l exit_status $status
    set -l res ok
    set test_duration (math (date +%s) - $starttime)
    mv -f interactive.tmp.log $file.tmp.log

    diff $file.tmp.out $file.out >/dev/null
    set -l out_status $status
    diff $file.tmp.err $file.err >/dev/null
    set -l err_status $status

    if test $out_status -eq 0 -a $err_status -eq 0 -a $exit_status -eq 0
        say green "ok ($test_duration sec)"
        # clean up tmp files
        rm -f $file.tmp.{err,out,log}
        return 0
    else
        say red "fail"
        if test $out_status -ne 0
            say yellow "Output differs for file $file. Diff follows:"
            colordiff -u $file.tmp.out $file.out
        end
        if test $err_status -ne 0
            say yellow "Error output differs for file $file. Diff follows:"
            colordiff -u $file.tmp.err $file.err
        end
        if test $exit_status -ne 0
            say yellow "Exit status differs for file $file."
            echo "Unexpected test exit status $exit_status."
        end
        if set -q SHOW_INTERACTIVE_LOG
            # dump the interactive log
            # primarily for use in travis where we can't check it manually
            say yellow "Log for file $file:"
            cat $file.tmp.log
        end
        return 1
    end
end

set failed
for i in $files_to_test
    if not test_file $i
        # Retry flakey tests once.
        if contains $i $TESTS_TO_RETRY
            say -o cyan "Rerunning test $i since it is known to be flakey"
            rm -f $i.tmp.*
            if not test_file $i
                set failed $failed $i
            end
        else
            set failed $failed $i
        end
    end
end

set failed (count $failed)
if test $failed -eq 0
    say green "All tests completed successfully"
    exit 0
else
    set plural (test $failed -eq 1; or echo s)
    say red "$failed test$plural failed"
    exit 1
end